Very poorly, actually. According to the New York Times, it had sold just 1500 copies as of last week.

Cue an â€śanonymousâ€ť Twitterer, who sent a Tweet to the Sunday Times (of London) claiming that the novel was written by J.K. Rowling.

Cue some sleuthing by that paperâ€™s arts editor, which revealed linguistic similarities to â€śHarry Potter and the Deathly Hollows,â€ť and showed that the supposed Mr. Galbraith shared an agent and editor with Ms. Rowling.

Cue an admission from the publisher that the “Cuckoo” author is, indeed, J.K. Rowling.